Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
  • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
  • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
  • H04M17/023—Circuit arrangements
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M1/00—Substation equipment, e.g. for use by subscribers
  • H04M1/02—Constructional features of telephone sets
  • H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M1/00—Substation equipment, e.g. for use by subscribers
  • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
  • H04M1/725—Cordless telephones
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M1/00—Substation equipment, e.g. for use by subscribers
  • H04M1/02—Constructional features of telephone sets
  • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
  • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
  • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
  • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position

Definitions

• the present invention relates to a particularly resistant telephone installation and even almost invulnerable to vandalism, which can operate without any means of payment on the spot, which applies the principle according to which one dissociates the actual telephone set from the handset whose user needs and which makes it possible to provide extremely simplified stations, and no longer just fragile cabins, each of these stations being able to be used simultaneously by several people.
• the subject of the invention is a telephone installation of the type comprising stations accessible to a plurality of persons and usable after the authorization of each of these persons by subordination of the use of the station to the delivery by each person in particular of a message of recognition such as an account number, of identification, of code or the like, characterized in that it comprises, on the one hand, stations equipped each with at least one emitter.
• radio receiver with at least two channels, or at least two short range radio transceivers, associated with at least one modu- reader-dem ⁇ dulator connected to the telephone network and on the other hand, cordless, portable handsets intended to be held individually by people, each handset comprising on the one hand a short range radio transceiver tuned either to a channel a radio transceiver which has at least two, that is to say a radio transceiver of a station which comprises at least two, and on the other hand a dial of any type known for dialing telephone call numbers and codes to be transmitted by the transmitter of the combi ⁇ born, several people can simultaneously use a single station by standing near said station and each maintaining his handset at a distance less than the range of one transceiver.
• the installation includes a device intended to automa ⁇ tically interrupt an already established radio link, as soon as the handset in question is distant from the corresponding station beyond a predeter ⁇ mined distance, the device possibly comprising a means of warnings ⁇ prior to the interruption;
• each channel, or each radio transceiver of the stations is associated with elements for signaling its occupied and unoccupied state and for displaying an identification mark corresponding to a code access transmitted by radio from a handset from a user action on the handset dial;
• each handset is granted to only one of the channels, or radio transceivers, of any station; - each handset is capable of operating with any of the channels, or radio transceivers, of any station;
• Each station is equipped with a device intended to establish automatically the connection with a handset and that of the channels, or radio transceivers, of a station considered which is unoccupied and not out of service;
• the installation includes means to oppose the understandable perception of the radio link by any receiver other than that of the handset and that of the station in question, in order to ensure the confidentiality of transmissions between handsets and stations;
• the stations have a facade little or not compatible with the transmission of radio signals between the transceivers of the handsets and those of the stations, the facade being crossed by as many antennas as the station comprises channels or transmitters.
• radio receivers; - each antenna is embedded in the facade;
• Each handset comprises two parts which are movable one relative to the other and which can thus occupy either a deployed position for the use of the handset, or a position of least encombr ⁇ ment for storing the handset in a pocket of clothing, a bag, a briefcase or others.
• Figure 1 is a schematic view of a handset according to one invention.
• Figure 2 is a diagram comprising a station according to the in ⁇ vention, with which must cooperate by radio one, or simultaneously several, combined of Figure 1.
• Figure 3 is a schematic view showing a station according to the invention provided with an antenna embedded in the facade of said station.
• Figure 4 is a sectional view taken along the line IV-IV of Figure 3.
• Figure 5 is a schematic view showing an alternative embodiment of a handset according to the invention.
• Figure 6 is a schematic view of a station according to the invention showing an alternative embodiment.
• a handset 1 comprises a radio transceiver 100 associated with an antenna 101.
• the handset 1 then has only one possibility of connection with a receiver -transmitter, because it must be tuned and the handset 1. If you want to give handset 1 greater possibilities, you can either equip it with several radia transceivers of different wavelengths, or provide a single transmitter radio receiver associated with several different channels, each of these solutions being within the reach of the skilled person.
• the installation comprises several stations 10 distributed over a more or less vast territory: a city, a country, etc. as are currently the public cabins.
• the invention makes it possible to install stations 10 not only in cabins but also by sealing them in a wall, since the stations 10 do not include wire, dial, coin mechanism or no weather sensitive parts.
• Each station 10, depending on the solution chosen for the handsets 1, may comprise a single radio transceiver, several radio transceivers or even a single radio transceiver provided with several channels.
• a single radio transceiver has been shown because it is easy for the skilled person, starting from the indications for a single transmitter- receiver, to carry out an installation with several.
• Each station 10 comprises an antenna 200 associated with a transceiver 201 connected by a link 202 to a recognition assembly 203 connected by a link 204 to a modulator-demodulator 205 itself connected by a link 206 to the purely electrical and telephone components.
• the enabling operation is done only by means of radio signals emitted by the transceiver 100 from information supplied by manipulation of the keys of a keyboard 102 of the handset 1 and these signals are received by the transmitter.
• -Receiver 201 via the antenna 200 then are supplied to a verification unit 203 which authorizes or condemns the communication.
• the modulator-demodulator 205 receives the desired information and ensures the communication.
• the transmitter 201 then receives the electrical signals by a link 207 which avoids passing through the assembly 203 and the radio message is transmitted via the antenna 200 to be received via the antenna 101 by the transmitter-receiver 100 handset 1.
• the user then hears the tone through an earpiece 103 and is thus informed that he can dial the number of his correspondent on the keypad 102.
• the user speaks into a microphone 104.
• the power of the transmitters 100 and 201 must be minimal since the handset 1 and the set 10 always remain at a distance which is of the order of meters, so that the components can be small to be accommodated without difficulty in the handset 1 and be obtained at low cost.
• the antenna (or antennas) 200 is internal to station 10, the front part of the latter must be permeable to radio waves and to avoid constituting a Faraday cage, station 10 must not be constituted by a fully metallic hood.
• Each antenna 200 can be embedded in a robust material which is permeable to radio waves.
• each antenna 200 crosses the facade 10a_ of the station 10 and is embedded in the latter.
• the antenna 200 is arranged along a winding path to have the desired length over a small area, but it is also possible to provide a straight path.
• the embedding can be integral, that is to say leaving no space between the facade, the antenna and an insulator which separates them.
• the keyboard 102 is provided in the central fraction of the "upper" part 106 because this solution can be advantageous since it involves only simple electrical connections between the two articulated parts, only the microphone 104 being on the folding part 105. If, on the contrary, provision is made for the keyboard 102 on the folding part 105, the presence of a joint can be a handicap.
• FIG 5 there is shown an alternative embodiment of the handset 1 which comprises practically only a single part 110 containing the electronic components, a microphone 111 being disposed at the end of a rod 112 articulated to the part 110 which can, as shown, have a housing in which the rod 112 and microphone 111.
• This set is particularly compact and therefore easy to store and use.
• FIG. 6 illustrates an embodiment according to which the station 300 can be embedded in a wall C which makes the various electrical and electronic components practically in ⁇ vulnerable. It comprises either several radio transceivers, or a single radio transceiver with several channels, each corresponding to a channel or to a transmitter of the handsets 1. These are essentially channels for different frequencies. These various transceivers have been represented by simple circles 301 which, here, are twenty in number. Each transceiver corresponds to a set of recognition and to a modulator-demodulator according to the principle described with regard to FIG. 2.
• an may provide pairs of green indicator light and red indicator light for each transceiver in the immediate vicinity of a number, here 1 to 20, so that a user arriving with his / her handset in front of the extension 300 while other users located at nearby are visibly in conversation, immediately see the red lights and observes to which numbers these red lights correspond so that it knows which are the numbers of transceivers occupied and, consequently, which are the numbers of the transceivers free since they are those whose numbers have the green light on and the red light off.
• a person skilled in the art knows how to perfectly produce, in the minimum dimensions required by the handsets 1, a frequency selector so that the simple dialing, on the dial 102 of a handset 1, of a number appearing on the set 300 turns on the handset 1 transmitter on the corresponding frequency. As soon as this connection is established, the frequency is automatically blocked for other users.
• the installation can still work since it suffices to empirically test the numbers of the transceivers 301 because if the transceiver 301 whose number has just been dialed is busy, it immediately responds with a busy signal and the user repeats his calls until the number he dials corresponds to a free 301 transceiver, in which case the user receives a message opposite to the previous one and signifying that '' he can start the authorization procedure in order to establish a communication.
• the stations are equipped with a device which automatically establishes the connection of the handsets with a free channel (or frequency), that is to say not currently used and in order Steps.
• a visual, audible or emitted warning signal can be provided to the handset.
• the connection can be automatically interrupted, in order to keep the facility its provisional service character and protect it against abuse which would consist in not voluntarily interrupting the radio link (which would be equivalent to what is called with conventional telephone installations "do not hang up”). It is, in fact, a telephone installation whose stations 10 have a precise location and not an organization of mobile radio telephones. This provision also protects the distracted user who leaves by forgetting to "cut" the communication. It is indeed a protection because, logically, the counting of the price of the communication does not end until the user interrupts it.
• the invention could be implemented by means different from those which have been described here.
• the dials 102 of the handsets 1 can be of any known type and include all kinds of keys different from the number keys in order to make the use of the installation simpler, more attractive or more efficient: repeat keys for the last number call, display of the duration and / or the price of the call, calculator etc.
• the payment methods for communications can be of any known type and in particular the allocation to an account identified by a number given by the user at the same time as a confidential code thanks to which the identity of this user is verified. .
• the sets 10 can be associated with a device delivering a file clearly showing the date, the number dialed, the duration of the call and its price corresponding to the amount debited from the user's account, etc.
• the stations can, of course, be located in all well-known public places but also in private premises and can have a telephone number.
• the stations 10 comprise a device intended to automatically direct the transmission of the handset 1 that the newcomer user is handling to the available frequency.
• the invention also makes it possible to make access to the interior of the station, for its repair or maintenance, subject to the prior emission of a coded message releasing a lock for a mask concealing the dismantling members proper. It is also possible to superimpose on the modulated carrier wave another modulation corresponding to an individual code ensuring the confidentiality of the communications and guaranteeing the correct allocation of the expenses to the desired account.
• the interruption of a conversation does not cause the interruption of the combined link 1-station 10 in order to allow the users to establish several communications in succession without having to restart the authorization and connection procedure. .
• stations accessible to the public are in fact only ends of antennas, all the electronic components being, themselves, distant and placed in highly protected places (premises of the body responsible for telecommunications, for example).
• each frequency corresponds an antenna length and to avoid mounting errors, it is possible to provide individual antenna fixing members for each frequency, these members constituting polarizing elements.
• the antennas When one chooses to drown the antennas in a mass such as concrete, it can be advantageous to drown in fact not the antennas themselves but tubes, in particular in synthetic materials, in which the antennas can be inserted and removed easily .
• this provision contributes to making the installation easy to use even by foreigners because one can hand over to them handsets 1 (possibly against deposit of a deposit) and a usable card without use of confidential code and without operation automatic debit from an account.

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Computer Networks & Wireless Communication (AREA)
• Computer Security & Cryptography (AREA)
• Mobile Radio Communication Systems (AREA)
• Telephone Set Structure (AREA)
• Telephone Function (AREA)
• Toys (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9316130

Family Applications (1)

Country Status (11)

Cited By (4)

Families Citing this family (6)

Citations (2)

Family Cites Families (3)

• 1985
  • 1985-02-11 FR FR8501906A patent/FR2577369A1/fr not_active Withdrawn
• 1986
  • 1986-02-10 EP EP86901090A patent/EP0214170A1/fr not_active Ceased
  • 1986-02-10 JP JP61501040A patent/JPS62501950A/ja active Pending
  • 1986-02-10 KR KR860700703A patent/KR870700194A/ko not_active Application Discontinuation
  • 1986-02-10 BR BR8605552A patent/BR8605552A/pt unknown
  • 1986-02-10 WO PCT/FR1986/000036 patent/WO1986004756A1/fr not_active Application Discontinuation
  • 1986-02-10 AU AU54535/86A patent/AU5453586A/en not_active Abandoned
  • 1986-02-10 CA CA000501480A patent/CA1247267A/fr not_active Expired
  • 1986-10-08 FI FI864058A patent/FI864058A/fi not_active IP Right Cessation
  • 1986-10-09 DK DK483386A patent/DK483386A/da not_active Application Discontinuation
  • 1986-10-09 NO NO1986864028A patent/NO864028D0/no unknown

Patent Citations (2)

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